JPH0536335B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a sheeter for cutting long roll paper conveyed from a long roll rotary printing machine or the like, and particularly to a sheeter for cutting paper cut into a certain size by the sheeter. The present invention relates to a cut paper conveying device suitable for sheeting.

[Conventional technology]

A conventional sheeter cut paper conveyance device will be explained with reference to FIG.

A long paper 9 conveyed by a tension roller 8 from a long web rotary printing machine or the like is moved between a lower blade 12 and an upper blade disposed on an upper blade cylinder 14 rotatably supported by a rotating shaft 13 on a side frame 10, for example. Cutting is performed by cooperation with the two upper blades 15A and 15B. The cut paper 9A is cut by the small cutting wheels 39, 65 and the whole paper wheels 41, 66 which are arranged vertically opposite to each other, and the upper belt 22 and the first lower belt which are clamped by these wheels. 63, and is conveyed while being sandwiched between these belts.

The cutting paper 9A is cut by wheels 41 and 6 for whole paper.
The cut paper 9A is conveyed to the downstream side by wheels 40 and 68 which are disposed vertically opposite each other on the downstream side of the cut paper 6 and directly press the cut paper 9A. In this case, the surface speeds of the wheels 40, 68 are set to be the same as the surface speeds of the wheels 39, 65 and 41, 66 in the conventional example. The cut paper 9A carried out to the downstream side is transferred to the upper blade barrel 1.
The rear end is struck by the tail tapper 7 which rotates in synchronization with the tail taper 4 and pushed downward, placed on the second lower belt 80 and conveyed.

In this case, the conveyance speed of the upper belt 22 and the first lower belt 63 is slightly (about 3.6%) faster than the conveyance speed of the long paper 9. As a result, in the case of half-sized cut sheets 9A, a minimum distance (approximately 15 mm) required for the operation of the tapper is formed between the preceding and following cut sheets 9A.

[Problems to be Solved by the Invention] By the way, in order for the tail tapper 7 to work well, there must be a gap of approximately 15 mm between the leading and trailing cut sheets 9A.
A gap of mm is required, and if this gap is small, the tail tapper 7 will hit the leading and trailing cut sheets 9A at the same time. This disturbs the aligned flow of the cut paper 9A, causing paper jamming, or so-called jamming. For this purpose, as described above, the conveyance speed of the belt 22 and the first lower belt 63 is adjusted to
The transport speed is set faster than the transport speed.

When the conveyance speed of the belts 22 and 63 is high in this way, the long paper 9 is cut immediately before the long paper 9 is cut.
Belts 22, 63 slip over it. When this slip occurs, the belts 22, 63 and the long paper 9
There was a problem in that the long paper 9 was charged due to the frictional action of the long paper 9, and suction occurred between the cut paper 9A that was continuously conveyed, which disturbed the aligned flow of the cut paper 9A and caused jamming. .

An object of the present invention is to adjust the interval between the leading and trailing cut sheets so that even if the cut sheets have a small paper size smaller than the full sheet size, the upstream side conveyance can be carried out without increasing the speed of the belt in the upstream side conveying section beyond the full sheet size. An object of the present invention is to provide a sheet conveying device for cut sheets that can be expanded immediately before being carried out from a section to a downstream conveying section.

[Means for solving problems]

In order to achieve such an object, the present invention provides upper and lower blades for cutting long paper into paper of small size and full paper size, wheels disposed vertically opposite to each other, and a device that clamps and presses the paper with the wheels. In the sheeter cut paper conveyance device, the sheeter is provided with an upstream side conveyance section that conveys the cut paper by an upper belt and a lower belt, and a tail tapper that pushes down the cut paper carried out from the upstream side conveyance section to the downstream side conveyance section. The wheels include a plurality of pairs of small paper wheels and a plurality of pairs of full paper wheels that are arranged downstream of the small paper wheels and run at the same speed as the small paper wheels, and the most downstream end of the upstream conveyance section. A plurality of pairs of removable speed-increasing wheels are provided which are vertically opposed to each other and which directly clamp the cut paper at a higher speed than the small-cut and full-cut wheels.

[Effect]

According to the above-mentioned configuration, the cut paper that is conveyed while being sandwiched between the upper belt and the lower belt in the upstream conveyance section is cut in the case of small paper just before being conveyed from the upstream conveyance section to the downstream conveyance section. The paper is directly clamped and conveyed by the speed-increasing wheel, and the gap between the leading and trailing small sheets is expanded to the minimum necessary for the operation of the tail tapper. Furthermore, in the case of a full sheet of paper, the speed increasing wheel is retracted from the conveyance system, so that the paper is conveyed at the normal conveyance speed.

〔Example〕

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

The cut sheet conveyance device 1 is attached to the sheeter 2 and includes an upper conveyance section 3, a first lower conveyance section 5, a second lower conveyance section 6, and a tail tapper 7. Long paper 9 conveyed by tension roller 8
The lower blade 12 is a fixed blade placed on a fixed base 11 fixed to the side frame 10 of the seater 2.
For example, the upper cutter body 14 fixed to the rotary shaft 13 rotatably supported by the side frame 10 is
Two upper blades 15 arranged at an angle of 180°
A and 15B cooperate to cut the paper into cut paper 9A, which is then transported by the cut paper conveyance device 1.

The upper conveyance section 3 includes rollers 16, 18, 19, which are arranged in a direction perpendicular to the conveyance direction of the cut paper 9A.
A plurality of upper belts 2 wrapped around 20 and 21
2, and the upper belts 22 are arranged in parallel at regular intervals. roller 19,2
1 is rotatably supported by the side frame 10, and the roller 16 has its base end fitted into a shaft 17A fixed to the side frame 10, and the tip of the roller arm 17 is biased in the direction of arrow A. It is rotatably supported in the section.

The roller 18 is rotatably supported at the upstream end of an upstream upper belt arm 25 whose downstream end is rotatably supported by a mounting shaft 23 fixed to the side frame 10 . The upper intermediate portion of the upper belt arm 25 is connected and pivoted to the lower end of a sliding rod 26A of an air cylinder 26, which is an example of an actuator, by a pin 28, and the base end of the air cylinder 26 is fixed to the side frame 10. Pin 30 to cylinder mounting bracket 29
It is connected and supported by.

The roller 20 is rotatably supported at the downstream end of a downstream upper belt arm 32 whose upstream end is rotatably supported by a mounting shaft 31 fixed to the side frame 10 . The upper intermediate portion of the upper belt arm 32 is connected and pivoted to the lower end of a sliding rod 33A of an air cylinder 33 by a pin 35, and the base end of the air cylinder 33 is connected to a cylinder mounting bracket 36 fixed to the side frame 10. It is connected and pivotally supported by a pin 38.

The upper belt arm 25 on the upstream side has a roller 1.
A plurality of wheels 39 are arranged near the mounting shaft 23, a plurality of speed increasing wheels 40 are arranged near the mounting shaft 23, and a plurality of wheels 41 are arranged at an intermediate portion between the speed increasing wheels 40 and the wheels 39.

The wheel 39 is adapted to be placed on the upper belt 22, and is provided in the upper belt arm 25 through a long hole 10 formed parallel to the conveyance direction.
It is attached to a wheel retraction mechanism 42A that is supported in a position adjustable manner. The wheel retraction mechanism 4
2A is a sliding body 45, a support body 46, and an operating member 4
7. The sliding body 45 is fitted into a guide member 48 which is attached to the upper belt arm 25 so as to be slidable within a certain range in parallel to the conveying direction of the cut paper 9A. A rotating shaft 49 to which a wheel 39 is fixed is rotatably supported. The rotation speed of the wheel 39 is set by a drive device (not shown) to be faster than the conveyance speed of the long paper 9, for example, about 2.6% faster.

The support 46 is fixed to the upper belt arm 25 above the slide 45. The operating member 47 is
It consists of a grip part 50 and a shaft part 51 which are arranged above and below to sandwich the support part 46a of the support body 46, and the shaft part 51
The upper part of the holding part 50 is fitted into a hole 50a formed in the grip part 50 and fixed with a pin 52. Shaft portion 51
The threaded portion (right-handed thread) 51a formed at the bottom of the
It is screwed onto the top surface of the sliding body 45. Further, a compression spring 53 is wound around a threaded portion 51a between the upper surface of the sliding body 45 and the support portion 46a of the support body 46.
Therefore, when the grip portion 50 is rotated clockwise (in the direction of arrow H in FIG. 2), the wheel 39 is raised via the sliding body 45.

The speed increasing wheel 40 is arranged between the plurality of upper belts 22 and is fixed to a rotating shaft 56 rotatably supported by a wheel retraction mechanism 42B attached to the upper belt arm 25, and the rotating shaft 56 is connected to a drive device. Therefore, it rotates in the direction of arrow B at a higher speed than the rotating shaft 49. Further, between the plurality of speed increasing wheels 40, a spacer 58 is placed on the upper belt 22.
A plurality of free rollers 40A are disposed so as to be fitted onto the rotating shaft 56 with their axial movement restricted.

The wheels 41 are fixed to a rotating shaft 55 that is rotatably supported by the upper belt arm 25, and are respectively placed on the plurality of upper belts 22. The rotating shaft 55 is rotated at the same speed as the rotating shaft 49 in the direction of arrow B by a drive device.

The first lower conveyance section 5 includes a plurality of first lower belts 63 wound around rollers 60, 61 and a plurality of free rollers 68A in parallel at regular intervals.
and a plurality of wheels 65, 66, 68, and the conveying surface of the first lower belt 63 is set to be in contact with the conveying surface of the upper belt 22. The roller 60 is rotatably supported by the side frame 10, and the roller 61 is rotatably supported by the side frame 10.
The proximal end is inserted into the shaft 69 fixed to the arrow C.
It is rotatably supported by the tip of a roller arm 70 which is biased in the direction of.

The wheel 65 is in contact with the lower surface of the plurality of first lower belts 63 and is fixed to a rotating shaft 71 that is rotatably supported by the side frame 10 .
This rotating shaft 71 is attached to the side frame 10 to cut the paper 9.
It is supported so as to be movable along a long hole 10b formed parallel to the transport direction of A. Also wheel 6
5 is always disposed opposite the wheel 39, and is set to clamp the upper belt 22 and the first lower belt 63 by cooperation with the wheel 39. The wheel 65 is driven by the wheel 39 and rotates in the direction of arrow D.

The wheel 66 is fixed to a rotating shaft 72 that is rotatably supported by the side frame 10, and is always arranged opposite to the wheel 41.
The upper belt 22 and the first lower belt 63 are configured to be clamped by a cooperative action with the upper belt 22 and the first lower belt 63. The wheel 66 rotates in the direction of arrow D following the wheel 41. Also wheel 4
The clamping pressure of 1.66 is adjusted by an adjustment mechanism (not shown). Further, the virtual contact point d of the wheels 41, 66 is approximately l from the cutting point b.
is set in the position.

The speed increasing wheel 68 is connected to the plurality of first lower belts 6
3, and is fixed to a rotating shaft 73 rotatably supported by the side frame 10, and is set to be in contact with the speed increasing wheel 40.
Further, the contact pressure between the speed increasing wheels 40 and 68 is adjusted by an adjustment mechanism. A first lower belt 63 is connected between the plurality of speed increasing wheels 68.
A plurality of free rollers 68A are placed thereon and fitted onto the rotating shaft 73 via the spacer 58 so as to be restricted from moving in the axial direction.

The second lower conveyor section 6 includes a second lower belt 80 wound around rollers 76 and 78 and a wheel 79, and the conveyance surface of the second lower belt 80 is connected to the upper belt 22 on the downstream side. It is arranged almost parallel to the conveyance surface with a certain gap. The roller 76 is rotatably supported by the side frame 10, and the roller 78 has its base end inserted into a shaft 81 fixed to the side frame 10, and the distal end of a roller arm 82 is biased in the direction of arrow E. is rotatably supported. The wheel 79 is fixed to a rotating shaft 83 that is rotatably supported by the side frame 10, and the rotating shaft 83 is rotated in the direction of arrow F by a drive device, and its rotational speed is the same as that of the wheel 65.
The rotational speed is lower than that of , for example, 1/20 to 1/25.

Additionally, the upper belt arm 32 is attached to the wheel 79.
A roller 86 rotatably supported at the tip of a roller arm 85 fixed to the downstream end of the second lower belt 80 is disposed facing the second lower belt 80 so as to pinch it. Further, a roller 90 rotatably supported by the distal end of a roller arm 89 whose base end is inserted into a shaft 88 fixed to the side frame 10 and is biased in the direction of arrow G is connected to the second lower belt 80 . It is placed with a slight distance from the conveyance surface.

The tail tapper 7 is disposed above the second lower belt 80 between the mounting shafts 23 and 31, and is fixed to a rotating shaft 91 rotatably supported by the side frame 10, and is spaced apart from the outer circumference by, for example, 180°. Rollers 92A and 92B are rotatably supported on the surface. The bottom of the locus of motion of the rollers 92A, 92B is set to be slightly above the conveying surface of the second lower belt 80, and the rotating shaft 91 is synchronized with the rotating shaft 13 of the upper cutter barrel 14. and rotate.

Next, the operation of the embodiment of the present invention will be explained.

The long paper 9 conveyed to the sheeter 2 by the tension roller 8 is cut by the cooperative action of the upper blades 15, 15B and the lower blade 12, and is conveyed as cut paper 9A of half size. In this case, wheels 39, 65
The virtual contact point a is set at a position 1/2 from the cutting point b. Then, the cut paper 9A is fed between the upper belt 22 and the first lower belt 63 by the rotational movement of the wheels 39 and 65, and is conveyed while being pinched. Here, the conveyance speed of the upper belt 22 and the first lower belt 63 is determined by the conveyance speed of the long paper 9 as described above.
The transport speed is set approximately 2.6% faster than the transport speed of
The interval between the leading and trailing cut sheets 9A is approximately 7.5 mm.

The cut paper 9A fed between the speed increasing wheels 40 and 68 is accelerated and sent out. As a result, the interval between the leading and trailing paper sheets 9A becomes approximately 15 mm, the rear end of the paper sheets 9A is struck by the tail tapper 7, and the paper sheets 9A are placed on the second lower belt 80. . In this case, the conveyance speed of the second lower belt 80 is different from that of the upper belt 22 and the first belt as described above.
Since the conveyance speed of the lower belt 63 is reduced to 1/20 to 1/25, the trailing cut sheets 9A are sequentially stacked on top of the preceding cut sheets 9A. Then, the stacker 10 passes through a roller 86 and a wheel 79.
0 in sequence.

When cutting paper 9A has the full paper size, the movable blade body 1
Attach only one upper blade, for example, the upper blade 15A to the blade 4. As mentioned above, the clamping action of the wheels 39 and 65 is unnecessary, and the grip portion 50 of the wheel retraction mechanism 42 is moved clockwise (in the direction of the center arrow H in FIG. 2).
The sliding body 45, the wheel 39, and the speed increasing wheel 40 are raised and moved out of the operating range. When starting from this state, due to the difference between the feeding speed of the long paper and the feeding speed of the conveyance unit, the leading and trailing cut sheets 9A are separated by about 15 mm and are sequentially conveyed as in the case of half-cutting.

In addition, in the embodiment, two upper blades 15 are provided in the upper blade barrel 14.
I explained about the one with A and 15B attached, but
Theta 2 with a large number of upper blades 15 attached to the upper blade barrel 14
also applies. In this case, wheels 39, 65
Change the position of to match the small dimensions. Also, upper blade barrel 1
By changing the rotation speed of 4, the size can be changed. Further, in the embodiment, the upper belt 22 is made up of one belt, but the upper belt arm 22 is divided into two parts, and the upper belt arm 2 is divided into two parts.
5, 32 may be specially attached. If jamming occurs, the upper belt arms 25, 32 are rotated upward by the air cylinders 26, 33 as shown by imaginary lines in FIG. 1, and the waste paper is discharged.

〔Effect of the invention〕

As described above, according to the present invention, the distance between the leading and trailing cut sheets can be increased by the speed-increasing wheel, so that the transport speed of the upper belt and the first lower belt, which are the upstream transport sections, can be increased. can be made slower than before. This reduces friction between the belt and the cut paper, reduces electrical charge on the cut paper, and prevents jamming and other damage to the cut paper.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram of a sheeter cut sheet conveying device according to the present invention, Fig. 2 is a plan view of the wheel retraction mechanism, Fig. 3 is a side view taken in the direction of - arrow in Fig. 2, and Fig. 4 is an upper belt belt. A schematic plan view for explaining the arrangement of side rollers and wheels, and FIG. 5 is a schematic side view of the theta. DESCRIPTION OF SYMBOLS 1...Sheet cut paper conveyance device, 7...Tail tatsupa, 9...Long roll paper, 9A...Cut paper, 12...
...Lower blade, 15A, 15B...Upper blade, 22...Upper belt, 39,65...Small cutting wheel, 40,
68...speed-increasing wheel, 41, 66...all paper wheel, 63...first lower belt.

Claims (1)

[Claims] 1. Upper and lower blades that cut long paper into paper of small size and full paper size, wheels arranged vertically opposite to each other, and an upper belt and a lower belt that are clamped by the wheels. A sheeter cut sheet conveying device including an upstream conveying section for conveying the paper, and a tail tapper that pushes down the cut paper carried out from the upstream conveying section to the downstream conveying section, wherein the wheels include a plurality of pairs of small cutting wheels. and a plurality of pairs of full paper wheels disposed downstream of the small paper wheel and running at the same speed as the small paper wheel; A sheeter cut paper conveying device comprising a plurality of pairs of removable speed-increasing wheels arranged vertically opposite each other to directly clamp and press the cut paper.